CN112177627B - Rapid construction method for jacking pipe with synchronous jacking and splicing - Google Patents

Abstract

The invention discloses a quick construction method of a jacking pipe with synchronous jacking and splicing, which comprises the following steps: s1, installing a guide rail at the bottom of the starting well, installing a cutter head and a host machine on the guide rail, and installing a main top device and an auxiliary top device in the starting well; s2, the first pipe joint is hung between the top ring and the host, the main jacking oil cylinder is started, and the first pipe joint is pushed; s3, the main jacking oil cylinder jacks the first pipe joint again, after the jacking is in place, the main jacking device resets, and meanwhile, the pipe joint jacking block and the first pipe joint are connected together; s4, starting the auxiliary jacking oil cylinder, continuing jacking the first pipe joint, resetting the auxiliary jacking device after jacking is completed, and simultaneously starting the main jacking oil cylinder to push the second pipe joint; and S5, repeating the steps S3 and S4 in a repeated and circulating mode until the jacking of all the pipe joints is completed. The invention solves the problem that the jacking of the front pipe joint needs to be stopped when the pipe joints are assembled by the pipe jacking method at present by adopting the main jacking oil cylinder and the auxiliary jacking oil cylinder to jack alternately, thereby shortening the construction period and improving the construction efficiency.

Description

Rapid construction method for jacking pipe with synchronous jacking and splicing

Technical Field

The invention relates to a pipe jacking construction method, in particular to a quick pipe jacking construction method with synchronous jacking and splicing.

Background

The urbanization process of China is continuously accelerated along with the rapid development of national economy, and urban population is increasingly dense, so that a series of problems of traffic jam, environmental pollution, building space congestion, infrastructure laggard and the like are caused. The reasonable development and utilization of underground space resources become an important means for relieving the urban pressure at present. However, a large number of engineering practices show that the open cut method is adopted for construction in central urban areas with dense personnel, heavy traffic and complex environment, multiple times of traffic and pipeline turnover are needed, construction planning is complex, the construction period is long, and adverse effects on normal operation of the city are inevitably caused. Therefore, the underground excavation construction method plays a crucial role in the development of underground space of the central urban area. The pipe jacking construction method is an underground engineering underground excavation method widely used in recent years. The method has little influence on the surrounding environment, does not influence road traffic, can pass through barriers such as pipelines and the like, has incomparable advantages compared with a slotting open-cut method, and is developed rapidly. However, the pipe joints assembled by the pipe jacking method need to be stopped jacking into the front pipe joints, so that the construction time can be prolonged, and the requirements of underground engineering construction on shortening the construction period and reducing the construction influence can not be met. In order to solve the problems and shorten the construction time of a pipe jacking method, a quick pipe jacking construction method with synchronous jacking and splicing is provided.

Disclosure of Invention

The invention provides a push pipe rapid construction method with synchronous jacking and splicing for solving the technical problems in the known technology, and the method solves the problem that the push pipe needs to be stopped jacking the front pipe joint when the pipe joints are spliced and assembled by the existing push pipe method, thereby shortening the construction period and improving the construction efficiency.

The technical scheme adopted by the invention for solving the technical problems in the prior art is as follows: a top splicing synchronous push pipe rapid construction method comprises the following steps: s1, a steel guide rail is installed at the bottom of an originating well, a cutter disc and a host are installed above the steel guide rail, a main jacking device and an auxiliary jacking device are installed in the originating well, the main jacking device is arranged at the rear of the host and comprises a base, a jacking ring, U-shaped iron, a main oil cylinder support and a main steel backing, the jacking ring, the U-shaped iron, the main oil cylinder support and the main steel backing are sequentially arranged from front to back, the base is arranged at the bottom of the originating well, the main steel backing and the main oil cylinder support are fixed on the base, a main jacking oil cylinder is installed on the main oil cylinder support, the jacking ring backs the U-shaped iron and is in sliding fit with the steel guide rail, the U-shaped iron is pushed to move forwards by the output end of the main jacking oil cylinder, the auxiliary jacking oil cylinders are provided with two sets and are respectively arranged at two sides of the main jacking device, the auxiliary jacking device comprises a pipe joint jacking block, an auxiliary oil cylinder support, an auxiliary steel backing and a cushion block which are sequentially arranged from front to back, the pipe joint jacking block is arranged on one side of the finally connected pipe joint and is connected with the pipe joint jacking block through a shear pin, an auxiliary jacking oil cylinder is mounted on an auxiliary oil cylinder support, the output end of the auxiliary jacking oil cylinder pushes the pipe joint jacking block, the auxiliary oil cylinder support, the auxiliary steel backrest and the cushion block are fixedly connected to the base, the auxiliary steel backrest leans against the cushion block, and the cushion block and the main steel backrest lean against the wall of a starting well; s2, hanging the first pipe joint between the top ring and the host, penetrating the cable and the pipeline out of the perforated groove on the side wall of the first pipe joint and connecting the cable and the pipeline with a control room, starting the main jacking oil cylinder, pushing the first pipe joint, splicing the first pipe joint at the rear end of the host after the sealing ring of the front end interface of the first pipe joint is pushed into the steel sleeve ring at the rear end of the host, and simultaneously closing the perforated groove on the side wall of the first pipe joint by using a steel plate I; s3, the main jacking oil cylinder jacks the first pipe joint again, after jacking in place, the main jacking oil cylinder retracts, the jacking ring and the U-shaped iron are lifted and reset to the front of the main jacking oil cylinder, a second pipe joint is lifted and placed, meanwhile, the pipe joint jacking block and the first pipe joint are connected together, the auxiliary jacking oil cylinder is started, and the first pipe joint is continuously jacked; s4, after the first pipe joint is jacked, retracting the auxiliary jacking oil cylinder, removing the connection between the pipe joint jacking block and the first pipe joint, sealing a connecting hole in the side wall of the first pipe joint, lifting and resetting the pipe joint jacking block to the front of the auxiliary jacking oil cylinder, starting the main jacking oil cylinder, pushing the second pipe joint, splicing the second pipe joint behind the first pipe joint after the sealing ring at the front end interface of the second pipe joint is pushed into the steel sleeve ring at the rear end of the first pipe joint, penetrating the cable and the pipeline which are moved out of the first pipe joint out of the perforated groove in the side wall of the second pipe joint, and simultaneously sealing the perforated groove in the side wall of the second pipe joint by using a steel plate II; and S5, repeating the steps S3 and S4 in a repeated and circulating mode until the jacking of all the pipe joints is completed.

The invention has the advantages and positive effects that: by adopting the main jacking oil cylinder and the auxiliary jacking oil cylinder to jack alternately, the problem that the jacking of the front pipe joint needs to be stopped when the pipe joints are assembled by the existing pipe jacking method is solved, so that the construction period is shortened, and the construction efficiency is improved.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a schematic view of the main jack cylinder jacking state of the present invention;

fig. 4 is a schematic diagram of the jacking state of the auxiliary jacking cylinder of the invention.

In the figure: 1. the device comprises a cutter head, 2, a main machine, 3, a first pipe joint, 4, a second pipe joint, 5, steel plates I, 6, a top ring, 7, U-shaped iron, 8, a main oil cylinder support, 9, a main jacking oil cylinder, 10, a main steel backing, 11, a pipe joint jacking block, 12, an auxiliary jacking oil cylinder, 13, an auxiliary oil cylinder support, 14, an auxiliary steel backing, 15, a cushion block, 16, a steel guide rail, 17 and a base.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:

referring to fig. 1 to 4, in order to solve the problem that the construction time is prolonged by stopping jacking the front pipe joint when the pipe joints are assembled by the existing pipe jacking method, the invention provides a quick construction method for jacking and assembling the synchronous jacking pipes, which comprises the following steps:

a top splicing synchronous push pipe rapid construction method comprises the following steps:

and S1, installing a steel guide rail 16 at the bottom of the starting well, then installing the cutter head 1 and the main machine 2 above the steel guide rail 16, and installing the main jacking device and the auxiliary jacking device in the starting well.

The main top device sets up the rear of host computer 2 leans on 10 after including base 17 and apical ring 6, U-shaped iron 7, master cylinder support 8 and the main steel that sets gradually after to in the past, base 17 sets up in the well bottom of starting, lean on 10 behind the main steel with master cylinder support 8 is fixed on the base 17 install main jacking hydro-cylinder 9 on the master cylinder support 8, the apical ring 6 leans against U-shaped iron 7, and the two is all sliding fit and is in on the steel guide rail 16, the output of main jacking hydro-cylinder 9 promotes U-shaped iron 7 antedisplacement.

The auxiliary jacking devices are two sets and are respectively arranged on two sides of the main jacking device, each auxiliary jacking device comprises a pipe joint jacking block 11, an auxiliary oil cylinder support 13, an auxiliary steel backrest 14 and a cushion block 15, the pipe joint jacking block 11 is arranged on one side of a pipe joint which is connected at last, the pipe joint jacking block and the auxiliary oil cylinder support are connected through a shear pin, an auxiliary jacking oil cylinder 12 is installed on the auxiliary oil cylinder support 13, the output end of the auxiliary jacking oil cylinder 12 pushes the pipe joint jacking block 11, the auxiliary oil cylinder support 13, the auxiliary steel backrest 14 and the cushion block 15 are fixedly connected on the base 17, the auxiliary steel backrest 14 leans against the cushion block 15, and the cushion block 15 and the main steel backrest 10 lean against the wall of a starting well.

S2, the first pipe joint 3 is hung and placed between the top ring 6 and the host machine 2, a cable and a pipeline penetrate out of the perforated groove in the side wall of the first pipe joint and are connected with a control room, the main jacking oil cylinder 9 is started to push the first pipe joint 3, the sealing ring at the front end interface of the first pipe joint 3 pushes the steel sleeve ring at the rear end of the host machine, the first pipe joint 3 is spliced at the rear end of the host machine 2, and meanwhile, the perforated groove in the side wall of the first pipe joint is sealed by a steel plate I5.

S3, the main jacking oil cylinder 9 jacks the first pipe joint 3 again, after jacking is in place, the main jacking oil cylinder 9 retracts, the jacking ring 6 and the U-shaped iron 7 are hoisted and reset to the front of the main jacking oil cylinder 9, the second pipe joint 4 is hoisted, meanwhile, the pipe joint jacking block 11 and the first pipe joint 3 are connected together, the auxiliary jacking oil cylinder 12 is started, and the first pipe joint 3 continues to be jacked.

S4, after the first pipe joint 3 is jacked, the auxiliary jacking oil cylinder 12 retracts, the connection between the pipe joint jacking block 11 and the first pipe joint 3 is removed, the side wall connecting hole of the first pipe joint 3 is sealed, the pipe joint jacking block 11 is hoisted and reset to the front side of the auxiliary jacking oil cylinder 12, meanwhile, the main jacking oil cylinder 9 is started to push the second pipe joint 4, a sealing ring at the front end interface of the second pipe joint 4 pushes a steel sleeve ring at the rear end of the first pipe joint, the second pipe joint 4 is spliced at the rear side of the first pipe joint, cables and pipelines which are moved out from the first pipe joint 3 penetrate out of the side wall perforated groove of the second pipe joint, and meanwhile, the side wall perforated groove of the second pipe joint is sealed by a steel plate II.

And S5, repeating the steps S3 and S4 in a repeated and circulating mode until the jacking of all the pipe joints is completed.

The main jacking oil cylinder 9 jacks the second pipe joint 4 again, after jacking is in place, the main jacking oil cylinder 9 retracts, the jacking ring 6 and the U-shaped iron 7 are hoisted and reset to the front of the main jacking oil cylinder 9, a third pipe joint is hoisted, and meanwhile, the pipe joint jacking block 11 and the second pipe joint 4 are connected together; and starting the auxiliary jacking oil cylinder 12, continuing jacking the second pipe joint 4, after jacking is completed, retracting the auxiliary jacking oil cylinder 12, releasing the connection between the pipe joint jacking block 11 and the second pipe joint 4, sealing a connecting hole in the side wall of the second pipe joint 4, lifting and resetting the pipe joint jacking block 11 to the front of the auxiliary jacking oil cylinder 12, simultaneously starting the main jacking oil cylinder 9, pushing a third pipe joint, splicing the third pipe joint behind the second pipe joint 4 after a sealing ring at the front end interface of the third pipe joint pushes a steel sleeve ring at the rear end of the second pipe joint 4, penetrating out a cable and a pipeline which are moved out from the second pipe joint 4 from a perforated groove in the side wall of the third pipe joint, simultaneously sealing the perforated groove in the side wall of the third pipe joint by using a steel plate III, and then carrying out the next jacking circulation according to the steps S3 and S4. The jacking methods of the other pipe joints including the third pipe joint are the same as those of the first pipe joint 3 and the second pipe joint 4, and are not described again.

The above method is described in further detail below:

a main jacking device is arranged in an originating well and consists of a jacking ring 6, a U-shaped iron 7, a main oil cylinder support 8, a main jacking oil cylinder 9, a main steel backrest 10 and a base 17.

A steel guide rail 16 is arranged at the bottom of the originating well, and then the cutter head 1 and the main machine 2 are arranged above the steel guide rail 16.

And (3) mounting an auxiliary jacking device, wherein the auxiliary jacking device consists of a pipe joint jacking block 11, an auxiliary oil cylinder support 13, an auxiliary jacking oil cylinder 12, an auxiliary steel backrest 14 and a cushion block 15. The installation position of the auxiliary jacking device is determined by the single jacking distance of the pipe joint, and the pipe joint can be aligned and connected with the pipe joint jacking block 11 after the single jacking of the pipe joint is finished.

The pipe joint jacking block 11 is positioned above the steel guide rail 16 and can slide back and forth on the steel guide rail 16 along the axial direction of the auxiliary jacking oil cylinder 12. The auxiliary oil cylinder support 13 is fixed on a base 17 and consists of a front steel plate and a rear steel plate which are similar in structure, and the middle of each steel plate is connected and fixed by crossed channel steel. The auxiliary jacking oil cylinder 12 penetrates through the auxiliary oil cylinder support 13 to act on the pipe joint jacking block 11, jacking force can be provided for jacking and excavating of the push bench, and meanwhile the auxiliary oil cylinder support 13 plays a role in supporting and positioning the auxiliary jacking oil cylinder 12. And the auxiliary steel backrest 14 and the cushion block 15 are positioned at the tail end of the auxiliary jacking oil cylinder 12 and lean against the wall of the starting well. The jacking reaction force of the auxiliary jacking oil cylinder 12 is dispersed by the auxiliary steel backrest 14 and then transmitted to the cushion block 15 and then transmitted to the wall of the starting well groove, so that the wall of the starting well groove is prevented from being damaged by extrusion. The length of the pad 15 is determined by the distance from the secondary steel back 14 to the wall of the originating well bore.

The first pipe section 3 is hung, and various power supplies and pipelines such as power cables, control cables, lighting cables and the like penetrate out of the perforated groove in the side wall of the first pipe section 3 and are connected with a control room. The main jacking oil cylinder 9 pushes the first pipe joint 3 through the jacking U-shaped iron 7 and the jacking ring 6, and the first pipe joint 3 is fixedly connected with the main machine 2 after the sealing ring at the front end of the pipe is pushed into the steel sleeve ring at the rear end of the main machine 2. And simultaneously, the steel plate I5 is used for sealing the opening groove on the side wall of the first pipe section.

The main jacking oil cylinder 9 continues to jack the first pipe joint 3, after jacking in place, the main jacking oil cylinder 9 retracts, and the jacking ring 6 and the U-shaped iron 7 are hung in front of the rear main jacking oil cylinder 9 to hang the second pipe joint 4. Meanwhile, the shear pin penetrates through the through hole of the pipe joint ejector block 11 and is inserted into the corresponding connecting hole in the side wall of the first pipe joint 3, so that the pipe joint ejector block 11 is fixedly connected with the first pipe joint 3. Then, the sub-jack cylinder 12 jacks the pipe joint jack block 11 to continue jacking the first pipe joint 3.

And after the first pipe joint 3 is jacked in place, the shear pin is removed, the connecting hole on the side wall of the first pipe joint 3 is sealed, the auxiliary jacking oil cylinder 12 is retracted, and the pipe joint jacking block 11 is hoisted to the front of the rear auxiliary jacking oil cylinder 12. Meanwhile, the main jacking oil cylinder 9 pushes the second pipe joint 4 forward, and the second pipe joint 4 is fixedly connected with the first pipe joint 3 after the sealing ring at the front end of the pipe is pushed into the steel sleeve ring at the rear end of the first pipe joint 3. Various power supplies and pipelines penetrating out of the perforated groove in the side wall of the first pipe joint 3 are placed in the groove in the side wall of the second pipe joint 4, and meanwhile, the perforated groove in the side wall of the second pipe joint 4 is sealed by a steel plate I5.

And the main jacking oil cylinder 9 jacks the second pipe joint 4, after jacking to the proper position, the main jacking oil cylinder 9 retracts, and the jacking ring 6 and the U-shaped iron 7 are hung in front of the rear main jacking oil cylinder 9 to hang the third pipe joint. Meanwhile, the shear pin penetrates through the through hole of the pipe joint ejector block 11 and is inserted into the corresponding connecting hole in the side wall of the second pipe joint 4, so that the pipe joint ejector block 11 is fixedly connected with the second pipe joint 4. Then, the pipe joint jacking block 11 is jacked by the auxiliary jacking oil cylinder 12 to continue jacking the second pipe joint 4.

And after the second pipe joint 4 is jacked in place, the shear pin is removed, the connecting hole on the side wall of the second pipe joint 4 is sealed, the auxiliary jacking oil cylinder 12 is retracted, and the pipe joint jacking block 11 is hoisted to the front of the rear auxiliary jacking oil cylinder 12. Meanwhile, the main jacking oil cylinder 9 pushes the third pipe joint forward, and when the sealing ring at the front end of the pipe joint pushes the steel sleeve ring at the rear end of the second pipe joint 4, the third pipe joint is fixedly connected with the second pipe joint 4, and the next jacking circulation is carried out. The pipe joint form and the jacking method of the rest of the third pipe joint and the like are consistent with those of the second pipe joint 4.

Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and those skilled in the art can make many modifications without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims (1)

1. A top splicing synchronous push pipe rapid construction method is characterized by comprising the following steps:

s1, installing a steel guide rail at the bottom of the starting well, then installing a cutter head and a main machine above the steel guide rail, installing a main top device and an auxiliary top device in the starting well,

the main jacking device is arranged behind the host and comprises a base, a jacking ring, U-shaped iron, a main oil cylinder support and a main steel backrest, wherein the jacking ring, the U-shaped iron, the main oil cylinder support and the main steel backrest are sequentially arranged from front to back, the base is arranged at the bottom of the starting well, the main steel backrest and the main oil cylinder support are fixed on the base, a main jacking oil cylinder is arranged on the main oil cylinder support, the jacking ring is backed against the U-shaped iron and both are in sliding fit on the steel guide rail, the output end of the main jacking oil cylinder pushes the U-shaped iron to move forwards,

the auxiliary jacking devices comprise pipe joint jacking blocks, auxiliary oil cylinder supports, auxiliary steel backrests and cushion blocks which are sequentially arranged from front to back, the pipe joint jacking blocks are arranged on one sides of pipe joints which are connected at last and are connected through shear pins, auxiliary jacking oil cylinders are mounted on the auxiliary oil cylinder supports, the output ends of the auxiliary jacking oil cylinders push the pipe joint jacking blocks, the auxiliary oil cylinder supports, the auxiliary steel backrests and the cushion blocks are fixedly connected to the base, the auxiliary steel backrests lean against the cushion blocks, and the cushion blocks and the main steel backrests lean against the wall of a starting well;

s2, hanging the first pipe joint between the top ring and the host, penetrating the cable and the pipeline out of the perforated groove on the side wall of the first pipe joint and connecting the cable and the pipeline with a control room, starting the main jacking oil cylinder, pushing the first pipe joint, splicing the first pipe joint at the rear end of the host after the sealing ring of the front end interface of the first pipe joint is pushed into the steel sleeve ring at the rear end of the host, and simultaneously closing the perforated groove on the side wall of the first pipe joint by using a steel plate I;

s3, the main jacking oil cylinder jacks the first pipe joint again, after jacking in place, the main jacking oil cylinder retracts, the jacking ring and the U-shaped iron are lifted and reset to the front of the main jacking oil cylinder, a second pipe joint is lifted and placed, meanwhile, the pipe joint jacking block and the first pipe joint are connected together, the auxiliary jacking oil cylinder is started, and the first pipe joint is continuously jacked;

s4, after the first pipe joint is jacked, retracting the auxiliary jacking oil cylinder, removing the connection between the pipe joint jacking block and the first pipe joint, sealing a connecting hole in the side wall of the first pipe joint, lifting and resetting the pipe joint jacking block to the front of the auxiliary jacking oil cylinder, starting the main jacking oil cylinder, pushing the second pipe joint, splicing the second pipe joint behind the first pipe joint after a sealing ring at an interface at the front end of the second pipe joint is pushed into a steel sleeve at the rear end of the first pipe joint, penetrating a cable and a pipeline which are moved out of the first pipe joint out of a perforated groove in the side wall of the second pipe joint, and simultaneously sealing the perforated groove in the side wall of the second pipe joint by using a steel plate II;

and S5, repeating the steps S3 and S4 in a repeated and circulating mode until the jacking of all the pipe joints is completed.

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